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/*
* Copyright (C) 2019 KeePassXC Team <team@keepassxc.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 or (at your option)
* version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "DatabaseCreate.h"
#include "Utils.h"
#include "core/Global.h"
#include "keys/FileKey.h"
#include <QCommandLineParser>
#include <QFileInfo>
const QCommandLineOption DatabaseCreate::DecryptionTimeOption =
QCommandLineOption(QStringList() << "t" << "decryption-time",
QObject::tr("Target decryption time in MS for the database."),
QObject::tr("time"));
const QCommandLineOption DatabaseCreate::SetKeyFileShortOption = QCommandLineOption(
QStringList() << "k",
QObject::tr("Set the key file for the database.\nThis option is deprecated, use --set-key-file instead."),
QObject::tr("path"));
const QCommandLineOption DatabaseCreate::SetKeyFileOption =
QCommandLineOption(QStringList() << "set-key-file",
QObject::tr("Set the key file for the database."),
QObject::tr("path"));
const QCommandLineOption DatabaseCreate::SetPasswordOption =
QCommandLineOption(QStringList() << "p" << "set-password", QObject::tr("Set a password for the database."));
DatabaseCreate::DatabaseCreate()
{
name = QString("db-create");
description = QObject::tr("Create a new database.");
positionalArguments.append({QString("database"), QObject::tr("Path of the database."), QString("")});
options.append(DatabaseCreate::SetKeyFileOption);
options.append(DatabaseCreate::SetKeyFileShortOption);
options.append(DatabaseCreate::SetPasswordOption);
options.append(DatabaseCreate::DecryptionTimeOption);
}
QSharedPointer<Database> DatabaseCreate::initializeDatabaseFromOptions(const QSharedPointer<QCommandLineParser>& parser)
{
if (parser.isNull()) {
return {};
}
auto& out = parser->isSet(Command::QuietOption) ? Utils::DEVNULL : Utils::STDOUT;
auto& err = Utils::STDERR;
// Validate the decryption time before asking for a password.
QString decryptionTimeValue = parser->value(DatabaseCreate::DecryptionTimeOption);
int decryptionTime = 0;
if (decryptionTimeValue.length() != 0) {
decryptionTime = decryptionTimeValue.toInt();
if (decryptionTime <= 0) {
err << QObject::tr("Invalid decryption time %1.").arg(decryptionTimeValue) << Qt::endl;
return {};
}
if (decryptionTime < Kdf::MIN_ENCRYPTION_TIME || decryptionTime > Kdf::MAX_ENCRYPTION_TIME) {
err << QObject::tr("Target decryption time must be between %1 and %2.")
.arg(QString::number(Kdf::MIN_ENCRYPTION_TIME), QString::number(Kdf::MAX_ENCRYPTION_TIME))
<< Qt::endl;
return {};
}
}
auto key = QSharedPointer<CompositeKey>::create();
if (parser->isSet(DatabaseCreate::SetPasswordOption)) {
auto passwordKey = Utils::getConfirmedPassword();
if (passwordKey.isNull()) {
err << QObject::tr("Failed to set database password.") << Qt::endl;
return {};
}
key->addKey(passwordKey);
}
if (parser->isSet(DatabaseCreate::SetKeyFileOption) || parser->isSet(DatabaseCreate::SetKeyFileShortOption)) {
QSharedPointer<FileKey> fileKey;
QString keyFilePath;
if (parser->isSet(DatabaseCreate::SetKeyFileShortOption)) {
qWarning("The -k option will be deprecated. Please use the --set-key-file option instead.");
keyFilePath = parser->value(DatabaseCreate::SetKeyFileShortOption);
} else {
keyFilePath = parser->value(DatabaseCreate::SetKeyFileOption);
}
if (!Utils::loadFileKey(keyFilePath, fileKey)) {
err << QObject::tr("Loading the key file failed") << Qt::endl;
return {};
}
if (!fileKey.isNull()) {
key->addKey(fileKey);
}
}
if (key->isEmpty()) {
err << QObject::tr("No key is set. Aborting database creation.") << Qt::endl;
return {};
}
auto db = QSharedPointer<Database>::create();
db->setKey(key);
if (decryptionTime != 0) {
auto kdf = db->kdf();
Q_ASSERT(kdf);
out << QObject::tr("Benchmarking key derivation function for %1ms delay.").arg(decryptionTimeValue) << Qt::endl;
int rounds = kdf->benchmark(decryptionTime);
out << QObject::tr("Setting %1 rounds for key derivation function.").arg(QString::number(rounds)) << Qt::endl;
kdf->setRounds(rounds);
bool ok = db->changeKdf(kdf);
if (!ok) {
err << QObject::tr("error while setting database key derivation settings.") << Qt::endl;
return {};
}
}
return db;
}
/**
* Create a database file using the command line. A key file and/or
* password can be specified to encrypt the password. If none is
* specified the function will fail.
*
* If a key file is specified but it can't be loaded, the function will
* fail.
*
* If the database is being saved in a non existent directory, the
* function will fail.
*
* @return EXIT_SUCCESS on success, or EXIT_FAILURE on failure
*/
int DatabaseCreate::execute(const QStringList& arguments)
{
QSharedPointer<QCommandLineParser> parser = getCommandLineParser(arguments);
if (parser.isNull()) {
return EXIT_FAILURE;
}
auto& out = parser->isSet(Command::QuietOption) ? Utils::DEVNULL : Utils::STDOUT;
auto& err = Utils::STDERR;
const QStringList args = parser->positionalArguments();
const QString& databaseFilename = args.at(0);
if (QFileInfo::exists(databaseFilename)) {
err << QObject::tr("File %1 already exists.").arg(databaseFilename) << Qt::endl;
return EXIT_FAILURE;
}
QSharedPointer<Database> db = DatabaseCreate::initializeDatabaseFromOptions(parser);
if (!db) {
return EXIT_FAILURE;
}
QString errorMessage;
if (!db->saveAs(databaseFilename, Database::Atomic, {}, &errorMessage)) {
err << QObject::tr("Failed to save the database: %1.").arg(errorMessage) << Qt::endl;
return EXIT_FAILURE;
}
out << QObject::tr("Successfully created new database.") << Qt::endl;
return EXIT_SUCCESS;
}